Mouthpiece



FIG. 1 is a perspective view of a mouthpiece.

FIG. 2 is a front elevational view of the mouthpiece of FIG. 1.

FIG. 3 is a back elevational view of the mouthpiece of FIG. 1.

FIG. 4 is a right side elevational view of the mouthpiece of FIG. 1.

FIG. 5 is a left side elevational view of the mouthpiece of FIG. 1.

FIG. 6 is a top plan view of the mouthpiece of FIG. 1; and,

FIG. 7 is a bottom plan view of the mouthpiece of FIG. 1. 

The ornamental design for a mouthpiece, as shown and described. 